Revert "Add overflow:hidden to framed panels"
Revert "Add overflow:hidden to framed panels"

This reverts commit 0c9a5fe150b2fad8c20693576e875002d98d95d4.

Bug: T192897
Change-Id: Iba6f4d1712bdcd6f7a9d90885633115ad4ff2b63

wikimedia/oojs-ui,wikimedia/oojs-ui,wikimedia/oojs-ui,wikimedia/oojs-ui